Packing head for well casings



May 26, 1925.

M. s'. BLACK PACKING HEAD FOR WELL 'GASINGS Filed Jan. 4, 1925 MLA/ifa.5c/M T'ER/.A cfr.

f Pfffmffifi `Patented May' 26, 1925A.

UNITED STATES MILLARD SUMTER BLACK, OF IBR-EA, CALIFORNIA.

:PACKING HEADFOR WEIg. ensures..

APATENT OFFICE;

Q 'Application mea Jahuayzi, 192e.r serial No. 610,663.

ya well casing-and tubing for preventing the passagel of liquid andlslush upwardly be` .i tween the two, myinvention being .construct-- edto permit of its application to tubings of different diameters and ofallowing the ready application and removal to and from the casing.

Although I will describe only one form of packing head for well casingsembodying my invention and point out the novel features thereof inclaims, it is tobe understood that various changes and modifications maybe made herein vwithout departing from the spirit and scope of suchclaims.

In the accompanying drawings,

s Figure 1 is a view showing in vertical section a. well casing Aandtubing having applied thereto one form ofy packing head embodying myinvention.

Fig. 2 is atop plan view .of Fig'. 1. l

Fig. 3 is a vtransverse sectional view taken Similar referencecharacters refer to similar .parts in each of the several views.

Referring specifically to the drawings and particularly to Fig. ,1, Ihave here shown a well casing desi nated at K which is shown in positionwithin a well, such casing being provided vat its upper end with anextension E having openings in which pipes P are mounted and throughwhich water and slush from the well is adapted to be delivered -to aointlexteriorly of the well. Above the pipe Ilthe extension E isenlarged diametrically to provide a shoulder 15 .grooved to receivea-packing ring 16 and upon which is adapted to seat a false ring R.v Thefalse ring R is a bushing and the bushings are made in different sizesto fit various well tubing and various well casings.- The false rinconstitutes a part Vof the packing head em odying my invention, and suchpacking head also includes a positioning ring 17 arranged interiorly ofthe false ring R and engaglng a.

shoulder 18 formed adjacent the lowerv end "j of the latter. Above thepositioning ring 17 are arranged a plurality of packing rings `19adapted to be engaged by a gland 2O slidably fitted within the bore ofthe false ring and formed with an annular flange 21 engaged by a sleeveS threadedly mounted upon the extensionl E. The sleeve S is formed' witha thickened portion 22 to provide a shoulder 28 which engages the flange21, the inner surface of the sleeve being of.

conical form to slips 24.

As shown in Y tends through the gland 20 of the packing head, kthepacking rings 19, positioning ring 17, and then downwardly into the wellcas'- ing yK. By] the adjustment of the `sleeve S, it will be'clear thatthe gland 20 can be forced downwardlyv to cause the packing rings 19 tofirmly embrace the tubing T and to thereby co-operate with the falsering R accommodate cone-shaped in preventing the passage of liquid orIslush upwardly between the well casingv 'and tubing. l y y v It will beparticularly noted that the tubing T shown in Fig. 1 is of relativelysmall diameter as this constitutes the lower por` tion of the tubing orthe first portion that Fig. 1, the well tubing T eX- V is introducedinto the well casing. When adding sections of the same diameter it willbe understood that it is necessary to remove the packing head as well asthe slips 24.

From the foregoing description taken in conjunction with theaccompanying drawi ings, it will be manifest that I have provided apacking head for well casingswhich effectively seals the joint betweenthe casing and' tubing and irrespective of the diameter of the tubing,and that the application and removal of the packing head to or from thewell casing can be readily accomplished to facilitate the insertion orwithdrawal of the tubing sections.

1. A packing head forxwell .casings com; prising a casing extension`having an annu-v lar 'shoulder formed interiorly thereof, a

false ring resting upon said shoulder andv engaging the interior of saidextensiony substantially its complete length, a centering ring withinthe false ring, packing rings superimposed upon the centering ring, agland movable upon the false rmg, and a sleeve adjustable on theextension and engaging said gland.

lar shoulder formed interiorly thereof, and having a groove, a packingring in the groove, a false ring sustained on thepacklng ring, acentering ring within the false ring, packing rings superimposed on thecentering ring, a gland movable within the false ring, and a sleeveadjustable on the extension .and engaging the gland for the purposedescribed.

`3.. A packing head for well casingscomprising a casin extension havingan annular shoulder ormed interiorly thereof, a false ring sustained onthe shoulder, a centering ring within the false ring, packing ringssuperimposed on the centering ring, a

' gland movable within the false ring, and a sleeve adjustable on -theextension andengaging the gland, said sleeve being formed with a conicalbore, yand slips within said bore.l

.4. A` packing head vfor well casings comprising a casing extensionhavin a shoulder formed interiorly thereof an grooved,

a packing ring in the groove, a false ring supported within theextension on the packa gland slidable in the false ring against i thepacking rings and having an outwardly Aextending flange at its upperend, and a sleeve adjustable on the extension and engaging the flangefor forcing the gland into engagement with the packing rings.

'5. A packing head for well casings comprising a casing extension, anannular shoulder formed interiorly thereof, a false ring disposed withinthe said extension with its lower edge engaging said shoulder, acentering ring within said false ring, packing rings superimposed uponsaid centering rings, a gland movable within the false ring, and aSleeve adjustable upon said extension and engaging said gland.

Invtestimony whereof I have signed my name to this specification.

MILLARD SUMTER BLACK.

,ing ring and, having an inwardly extending

